JP2001167960A - Measurement apparatus and identification element, and measurement system with combination thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an identification element which is strong against flaws or contamination and whose fitting position is not very limited, a measuring system which has a function to fetch an identification data on the identification element side by radio communication, and a measuring system having their combination. SOLUTION: An identifier 4 which is fitted on a trap side to be measured is provided with a memory part 47. An identification data to identify the trap to be measured is stored in the memory 47 in advance. When the identifier 4 receives electromagnetic waves from a measuring device, it extracts a d.c. power from the electromagnetic waves by means of a rectifying part 46. Then, the memory 47 and a modulation part 48 are driven by the extracted electric power, thereby sending the electromagnetic waves including the identification data to the measuring device. The measuring device extracts the identification data from the electromagnetic waves sent from the identifier 4, and uses it to recognize the trap to be measured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various kinds of measurement fields, which include predetermined information for identifying (identifying) the measurement object itself or in the vicinity thereof, for example, the type of the measurement object and the information for management. The present invention relates to a measurement apparatus having a function of attaching an identifier having information such as a number and taking in the information from the identifier, a measurement system including the identifier, and a combination thereof.

[0002]

2. Description of the Related Art As a technique for attaching the above-described identifier to the measurement object itself or in the vicinity thereof and taking in information possessed by the identifier, for example, there is a technique using a generally known bar code. That is, information such as the type of the object to be measured and an arbitrary management number is converted into a bar code and printed on a label (sticker) or the like, directly or indirectly (for example, with a string) on or near the object to be measured. Affixed to a plate or the like suspended by a body or the like). Then, when actually performing the measurement, the barcode is read by a dedicated optical reading device. This makes it possible to easily recognize information such as the type and the management number of the measurement target without depending on the naked eye of a human. Further, if the information obtained by the reading device can be automatically input to the measuring device, for example, the trouble of inputting various data at the time of measurement and management can be saved, and work efficiency can be improved.

[0003]

However, according to the prior art utilizing the bar code, when reading the bar code by the reading device, the reading portion of the reading device, that is, the so-called head portion, is attached to the bar code. It must be in contact or face-to-face. Therefore, a space for that needs to be provided in the front part of the barcode, and there is a problem that the mounting position of the barcode (strictly, the above-mentioned label or the like) is limited accordingly.

[0004] Further, if the surface of the bar code is scratched or stained, there is a problem that the bar code may be erroneously recognized or the bar code may not be read at all. This problem is particularly remarkable when the place where the barcode is attached (in other words, the place where the measurement target is placed) is, for example, a factory or an outdoor where there is relatively much dust and dirt.

Furthermore, according to the above-mentioned prior art, in addition to the measuring device, a separate reading device is required. Therefore, when using the measuring device, a reading device must always be prepared, and there is a problem that the usability is poor.

In view of the above, unlike the bar code, the present invention provides an identifier whose mounting position is not particularly limited and is not easily affected by scratches, dirt, and the like, and has a function of taking in information possessed by the identifier. It is an object to provide a measurement device and a measurement system including a combination thereof. It is also an object of the present invention to improve the usability as a measuring device.

[0007]

In order to achieve the above object, a measuring apparatus according to the present invention is provided with a first transmitting section for outputting a first transmitting signal, and the first transmitting signal supplied thereto. A first transmitting element that converts the first transmission signal into a first high-frequency signal and emits the same into space; and a first reception element that receives a second high-frequency signal from space and converts it into a first reception signal. Element and
A first receiving unit that receives the first received signal and extracts predetermined information related to the measurement target from the first received signal;
It is provided with.

[0008] An identifier according to the present invention comprises a second receiving element that receives the first high-frequency signal from space, converts the signal into a second received signal, and outputs the signal. When a second reception signal is output, a second reception unit that generates and outputs a response command in response to the second reception signal, and a storage unit of, for example, a semiconductor memory configuration in which predetermined information on the measurement target is stored in advance. A second transmitting unit for outputting a second transmission signal including predetermined information stored in the storage unit when a response command is output from the second receiving unit;
A second transmission element which is supplied with a transmission signal of the second type and converts the second transmission signal into the second high-frequency signal and emits the signal into space;
It is provided with. Note that this identifier is, for example,
It is provided directly on the object to be measured or in the vicinity thereof, or indirectly through any mounting means.

The measuring system according to the present invention comprises a combination of the above measuring device and one or more identifiers,
The first and second high-frequency signals are wirelessly transmitted and received between the two.

Here, the above-mentioned predetermined information is information for identifying an object to be measured, such as a model of the object to be measured, an arbitrary management number, a specification of the object to be measured, and a mounting location. Etc., indicating information. Based on the predetermined information, for example, various parameters necessary for accurately measuring the measurement target (that is, parameters necessary for determining the state of the measurement target from measurement data obtained by measuring the measurement target) ) Can be determined.

That is, according to the present invention, a first high-frequency signal, a so-called radio wave, is emitted into the space from the measuring device side. When the first high-frequency signal reaches the identifier with a certain or more electric field strength due to, for example, approaching the measurement device and the identifier, the identifier becomes the second high-frequency signal including predetermined information stored in the storage unit. Signal (strictly speaking, a second signal containing predetermined information)
A second high-frequency signal obtained by converting the transmission signal into a radio wave by the second transmission element) is emitted into space, in other words, transmitted to the measuring device as a kind of response signal to the first high-frequency signal. I do. The measuring device extracts predetermined information included in the second high-frequency signal (strictly speaking, a first reception signal obtained by receiving the second high-frequency signal by the first reception element). From the information obtained by the extraction, predetermined information relating to the measurement target, for example, the type and management number of the measurement target are recognized. As described above, according to the present invention, the predetermined information included in the identifier is wirelessly transmitted to the measuring device without contact. On the measurement device side, for example, a measurement parameter necessary for accurately measuring the measurement object can be determined based on the predetermined information obtained from the identifier side.

[0012] The first transmitting section on the measuring device side includes:
The first transmission signal may be output only when a transmission command is given from outside. With this configuration, the first high-frequency signal is emitted from the measuring device only when a transmission command is given from the outside, for example, only when the predetermined information is acquired from the identifier as necessary. Therefore, for example, power saving of the measuring device can be realized as compared with the case where the first high-frequency signal is always emitted until it is not necessary to take in the predetermined information from the identifier.

As described above, the measuring apparatus of the present invention has an information capturing function of wirelessly capturing information on the identifier side in addition to an original measuring function of measuring a certain state of a measurement object. It is. Therefore, each means for realizing this information capturing function, that is, the first transmitting unit,
A first transmitting element, a first receiving element, and a first receiving unit,
Each of the means for realizing the above-mentioned measuring function is built in a common housing. With this configuration, the device for wirelessly capturing the information on the identifier side and the measuring device for measuring a certain state of the object to be measured have a configuration equivalent to the integration of the device, and the usability of the entire device is improved. Is improved.

Further, the first transmitting element and the first receiving element may be integrally formed by a common element. By thus using both the first transmitting element and the first receiving element, the configuration of the entire apparatus can be simplified and the cost can be reduced.

[0015] The measuring device may be provided with a setting section for automatically setting a part or all of the predetermined information extracted and obtained by the first receiving section. For example, if various data such as the type of the object to be measured and the management number included in the information obtained by the extraction are automatically set in the measuring device, the various data at the time of measurement and management can be obtained. The work of inputting can be omitted, and work efficiency can be improved.

The first transmission signal may be an AC signal having a constant frequency and amplitude, for example, a sine wave signal having a single frequency, a square wave pulse signal having a constant pulse width and period, and the like. That is, on the identifier side, when a predetermined signal, a signal of a predetermined frequency, or the like is received as the first high-frequency signal, this is a kind of response request to send back the predetermined information from the measuring device side. It is sufficient if it can be recognized that there is, and it is not necessary that other special information is included in the first high-frequency signal. Therefore, the first transmission signal serving as the basis of the first high-frequency signal is simply an AC signal having a constant frequency and a constant amplitude as described above, and specifically, only a carrier wave is sufficient. As described above, if only the carrier is sufficient for the first transmission signal, the configuration of the first transmission unit that outputs the first transmission signal can be simplified and the cost can be reduced.

On the other hand, on the identifier side, the second transmitting element and the second receiving element may be integrally formed by a common element. By thus using both the second transmitting element and the second receiving element, the configuration of the identifier itself can be simplified and the cost can be reduced.

Further, the second receiving section is configured to transmit the first high-frequency signal (strictly speaking, the first high-frequency signal) transmitted from the measuring device.
The second high-frequency signal received by the second receiving element
May be configured to extract the power from the received signal (i.e., received signal) and output the extracted power as the response command. Such a second receiving unit can be constituted by, for example, a rectifying circuit or a rectifying / smoothing circuit combining only passive elements. If the power output from the second receiving unit is used as a driving power source to drive the second transmitting unit including the storage unit, a driving power source for driving each component is provided on the identifier side. There is no need to provide it separately. To that extent, the structure of the identifier can be further simplified and the cost can be reduced.

Further, some or all of the constituent elements of the identifier, that is, the second receiving element, the second receiving section, the second transmitting section and the second transmitting element are built in, for example, one housing. By doing so, they may be integrated. By integrating each component in this way, the identifier can be reduced in size. Also,
Management and handling of identifiers are also facilitated.

When transmitting and receiving the first high-frequency signal between the first transmitting element on the measuring device side and the second receiving element on the identifier side, by bringing these elements close to each other, the distance between these two elements is increased. The first high-frequency signal may be transmitted and received via inductive coupling. In this way, if the first transmitting element and the second receiving element are so-called transformer-coupled, the first high-frequency signal (strictly speaking, radio wave energy corresponding to the first high-frequency signal) between the two elements is connected. Propagation loss can be suppressed, and the first high-frequency signal can be transmitted and received more efficiently. In addition, power for transmitting and receiving the first high-frequency signal can be reduced accordingly, and power can be saved.

Also, when transmitting and receiving the second high-frequency signal between the second transmitting element on the identifier side and the first receiving element on the measuring device side, as in the above, these elements are brought close to each other. By inductive coupling between the two,
The second high-frequency signal may be transmitted and received via this inductive coupling. With this configuration, power can be saved even in transmission and reception of the second high-frequency signal (strictly speaking, radio wave energy corresponding to the second high-frequency signal).

The present invention can be applied to, for example, a technique for measuring a working state of a trap device provided in a piping system as an object to be measured, such as a generally known steam trap.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to, for example, a system for measuring the operation state of the steam trap will be described with reference to FIGS.

FIG. 2 shows an external view of a measuring device for measuring the operation state of the steam trap. This device is
When a steam leak occurs in the steam trap, ultrasonic vibration of a size corresponding to the amount of the steam leak is generated by the trap itself (housing).
In order to measure the presence / absence of steam leakage from the trap and the amount of steam leakage using the phenomenon that occurs as shown in FIG.
A roughly rod-shaped probe 1 and a device body 3 of approximately palm size connected to the probe 1 via a dedicated cable 2
And consisting of

The probe 1 has a round bar-shaped detector 11 at one end. At the tip 11a of the detection unit 11,
A vibration detector (not shown) for detecting the ultrasonic vibration is provided, and the tip 11a of the detection unit 11 is pressed against the housing surface of the trap (not shown), whereby the trap itself is caused by the steam leakage. Detects ultrasonic vibration generated in The so-called vibration detection signal obtained by this detection is input to the apparatus main body 3 via the cable 2.

The apparatus main body 3 is a substantially flat box-shaped one.
A CPU (Central Processing Unit) (not shown) is provided inside. Then, based on the correlation between the vibration detection signal input from the probe 1 (strictly, so-called vibration detection data obtained by digitizing this signal) and the amount of steam leakage, the CPU leaks steam to the trap. Is determined, and if a steam leak has occurred, what is the amount of the leak? Then, the derived measurement result is displayed on a display unit 31 having, for example, a liquid crystal panel configuration above the front surface of the apparatus main body 3 and is stored in a storage unit (not shown) in the apparatus main body 3.

Note that so-called correlation data relating to the correlation between the vibration detection signal and the amount of steam leakage is stored in the storage unit in advance. However, the correlation data differs depending on the type of trap (operation principle), application, steam pressure, steam temperature, and the like. Therefore, a plurality of correlation data corresponding to various traps are stored in the storage unit for each specification of each trap, for example, for each type of trap or any management number. Of the respective correlation data, the one corresponding to the trap to be measured is transmitted from, for example, a plurality of push button keys 32 provided below the display unit 31 to an operation unit 33 having a configuration. Set by entering the model and management number of the trap,
The so-called parameters are set. As described above, accurate trap measurement can be realized only by setting the measurement parameters corresponding to the trap to be measured. In addition,
As will be described later, in the present embodiment, even when identification data is transmitted from the probe 1 separately from the vibration detection signal, the parameter setting is performed according to the identification data.

By the way, the measuring device according to the present embodiment is stored in an identifier 4 described below in addition to the original measuring function of measuring the presence / absence of a steam leak and the amount of the leak as described above. It also has a so-called data capturing function of capturing identification data wirelessly. FIG. 1 shows a schematic configuration of the identifier 4 and a data capturing unit 5 for realizing the data capturing function on the measuring device side.

That is, the identifier 4 is an antenna element 4 for transmitting and receiving radio waves to and from the data acquisition unit 5 on the measuring device side.
1 and a circuit board 43 connected to the antenna element 41 via a signal line 42. The antenna element 41 and the circuit board 43 are housed in a rectangular parallelepiped resin case 44, for example, as shown in FIG. It is attached via an attachment member.

The antenna element 41 comprises a core 41a made of a magnetic material such as ferrite and an RF coil 41b wound around the core 41a and connected to the signal line 42. The configuration of the antenna element 41 will be described in more detail. As shown in FIG. 4, a core portion 41a includes a columnar core portion 41c and a circle surrounding the core portion 41c at a predetermined interval from a side wall thereof. It comprises a column-shaped outer peripheral portion 41d and a disc-shaped connecting portion 41e for connecting one end of each of the core portion 41c and the outer peripheral portion 41d. And the core part 41c
The RF coil 41b is wound thereon, and the signal line 42 connected to the RF coil 41b is connected to the circuit board 43 through a through hole 41f formed in the coupling portion 41e. The outer dimensions of the antenna element 41 are, for example, such that the radial dimension D is about D = 10 mm and the thickness dimension T
Is about T = several mm.

The circuit board 43 includes a filter unit 45, a rectifier unit 46, a memory unit 47, and a modulation unit 48. The signal line 42 is connected to the filter unit 45 via a circuit terminal 43a. . The filter unit 45 has two band limiting filters 45a and 45b each having a pass band in a different frequency band, for reception and for transmission. The rectifying unit 46 rectifies and smoothes the output signal of the reception filter 45a and outputs the rectified and smoothed signal. For example, the rectifying unit 46 includes a rectifying and smoothing circuit in which a rectifying circuit having a diode configuration and a smoothing capacitor are combined. The memory unit 47 is composed of a nonvolatile semiconductor memory such as a ROM, for example.
Identification (ID) data for identifying the trap to be attached, such as the type and management number of the trap to which each identifier 4 is attached, is stored in advance. The modulation section 48 includes a high-frequency oscillation circuit (not shown) therein, and converts a high-frequency signal generated by the oscillation circuit, a so-called carrier wave, into identification data stored in the memory section 47 (strictly speaking, this identification data is The signal is converted into an amplitude (AM) signal by an analog signal, for example.
To the transmission filter 45b. The memory unit 4
The 7 and the modulator 48 drive the rectified and smoothed output of the rectifier 46 as respective drive power supplies.

As described above, each element constituting the circuit board 43 can be realized by a relatively small-sized and simple electric circuit. Therefore, the identifier 4 formed by integrating the circuit board 43 and the antenna element 41 having a size of several mm with the resin case 44 can be sufficiently reduced in size. For example, as shown in FIG. 3, the circuit board 43 is horizontally arranged and the identifier 4 is arranged on the circuit board 43. More specifically, the identifier 4 is arranged so that the coupling portion 41e faces one surface of the circuit board 43. Then, the width dimension (length of one side in the horizontal direction) W of the identifier 4 is set to W = 20 mm.
And the height dimension H can be set to about H = 15 mm. Note that FIG. 3 is an example showing the appearance of the identifier 4 until it gets tired, and the appearance shape and structure of the identifier 4 are not limited to FIG. For example, the shape of the case 44 may be another shape such as a spherical shape, or the antenna element 41 and the circuit board 4
3 may be configured as separate solids. Further, the structure of the antenna element 41 shown in FIG. 4 is merely an example to the extent that the antenna element 51 is bored, and a predetermined (frequency) radio wave is transmitted between the antenna element 51 and the measurement-device-side antenna element 51 to be described later. The structure is not limited to the one shown in FIG.

On the other hand, the data acquisition unit 5 on the measuring device side includes an antenna element 51 exactly the same as the antenna element 41 on the identifier 4 side, and a circuit board 53 connected to the antenna element 51 via a signal line 52. And is composed of Since the specific structure of the antenna element 51 is exactly the same as that in FIG. 4 described above, only the first letter of each symbol in FIG.

The antenna element 51 is, as shown in FIG.
It is built into the tip of the substantially rod-shaped antenna rod 12 with the surface opposite to the coupling portion 51e exposed outside. As shown in FIG. 2, the other end of the antenna rod 12 is coupled to the side surface of the probe 1 slightly closer to the distal end, and about 180 degrees around the coupling portion 12a as shown by an arrow 12b in FIG. It is configured to be able to rotate degrees.
When the identification data is acquired by the data acquisition unit 5, the tip of the antenna rod 12 is used with the tip of the probe 1 facing the tip of the probe 1 as shown in FIG. After the acquisition of the identification data is completed, the antenna rod 12 is stored on the side surface of the probe 1 with the antenna rod 12 facing the opposite side as shown by a dotted line 12c in FIG.

The circuit board 53 is built in the probe 1 and includes a filter section 54, a transmission section 55 and a reception section 56. Of these, the circuit terminal 5 is
The signal line 52 is connected via 3a, and the signal line 52 is wired to the antenna element 51 via the inside of the antenna rod 12. The filter unit 54 includes a transmission band limiting filter 54 a having a pass band in the same frequency band as the reception filter 45 a on the identifier 4 side, and a reception band limiting filter 54 a having a pass band in the same frequency band as the transmission filter 45 b on the identifier 4 side. And a band limiting filter 54b. The transmission unit 55 includes a high-frequency oscillation circuit (not shown) therein. When a transmission command is input from the input terminal 53b, a high-frequency signal generated by the oscillation circuit, a so-called carrier wave, is transmitted to the transmission filter 54a. Supply. The transmission command is input to the transmission unit 55 when, for example, the data acquisition switch 13 provided on the side surface of the probe 1 is pressed. On the other hand, the receiving section 56 demodulates the output signal of the receiving filter 54b.

That is, in order to measure the operating state of an arbitrary trap with the measuring device configured as described above, first,
The tip of the antenna rod 12 of the probe 1 is directed toward the tip of the probe 1 as shown in FIG. Then, the tip of the antenna rod 12 is brought close to the trap 4 to be measured or the identifier 4 attached near the trap itself, and the data capture switch 13 of the probe 1 is pressed. Then
The carrier generated by the transmission unit 55 of the data acquisition unit 5 is supplied to the antenna element 51 via the transmission filter 54a, whereby a radio wave corresponding to the carrier is emitted from the antenna element 51 into the air. This antenna element 51
The radio wave emitted from corresponds to the first high-frequency signal described in the claims.

The radio wave emitted from the antenna element 51 is received by the antenna element 41 on the identifier 4 side. The signal received and obtained by the antenna element 41 is supplied to the rectifying unit 46 via the receiving filter 45a on the identifier 4 side. The rectifier 46 extracts DC power by rectifying and smoothing the supplied signal, and supplies the extracted DC power to the memory 47 and the modulator 48. When the DC power is supplied, the memory unit 4
7 and the modulator 48 are driven. That is, the modulation unit 48 reads out the identification data stored in the memory unit 47,
The carrier generated by itself is amplitude-modulated by the identification data (strictly, a signal obtained by converting the identification data into an analog signal). This amplitude-modulated signal is transmitted to the transmission filter 45.
The signal b is supplied to the antenna element 41 via the antenna element b, whereby a radio wave including the identification data is emitted from the antenna element 41 into the air. The radio wave emitted from the antenna element 41 corresponds to the second high-frequency signal described in the claims. The DC power output from the rectifier 46 corresponds to a response command described in the claims.

The radio wave emitted from the antenna element 41 on the identifier 4 side is received by the antenna element 51 on the measuring device side. The signal received and received by the antenna element 51 is received by the receiving filter 54b on the data capturing unit 5 side.
Is input to the receiving unit 56 via the. The receiving unit 56 demodulates the input signal, extracts the identification data included in the signal, and outputs the identification data from the output terminal 53c. The identification data output from the output terminal 53c is
The data is input to the CPU in the apparatus main body 3 via the dedicated cable 2. As described above, the CPU sets the correlation data corresponding to the trap to be measured according to the input identification data, and performs the so-called parameter setting. At the same time, the CPU displays the type name and management number of the trap corresponding to the set parameters on the display unit 31 of the apparatus main body 3. This series of operations of the CPU is based on a control program stored in a storage unit in the apparatus main body 3. Then, after confirming that the identification data has been set by the display on the display unit 31, the antenna rod 12 is housed as shown by the dotted line 12c in FIG. 2 and the trap measurement is performed.

The communication frequency f used for wireless communication between the antenna elements 41 and 51 is, for example, a so-called MF-HF frequency band of f = 1 MHz to 10 MHz. Then, according to the communication frequency f, each of the filters 45a, 45b, 54a, 54b
Are designed for each frequency characteristic (pass band).

As described above, according to the present embodiment, the identification data stored in the identifier 4 is transmitted wirelessly to the measuring device in a non-contact manner. Thus, for example, identifier 4
And the distance between the measurement device (the data acquisition unit 5 of the probe 1) and the tip of the data acquisition unit 5 (the antenna element 51) cannot be located in front of the identifier 4. Also, the information of the identifier 4 can be reliably taken into the measuring device. Therefore, unlike the above-described conventional technology using a barcode, the mounting position of the identifier 4 is not strictly limited, and the mounting position of the identifier 4 can be made flexible.

In addition, even if the surface of the identifier 4 is slightly scratched or dirty, the identification data can be captured if the wireless communication is not hindered. Therefore, according to the present embodiment, there is an advantage that the embodiment is less susceptible to scratches, dirt, and the like than the above-described related art. This means that the place where the identifier 4 is attached, in other words, the place where the trap is installed,
In a factory or outdoors where there is relatively much dust and dirt,
Very effective.

Further, in the present embodiment, the means for taking in the identification data, that is, the data taking section 5 is incorporated in the probe 1 on the measuring device side, so that the bar code is provided separately from the measuring device. The device is more convenient to use than the conventional technology requiring a reading device. Then, the measurement parameters (correlation data) corresponding to the trap to be measured are automatically set in accordance with the captured identification data, so that the operation of the operation unit 33 manually sets the data of the above parameters and the like. Can be omitted.

The identifier 4 extracts DC power from a radio wave transmitted from the measuring device side, and drives the extracted power as a drive power source for itself (the memory unit 47 and the modulation unit 48). With this configuration, there is no need to provide a separate power supply means for the identifier 4 itself. Therefore, the configuration of the identifier 4 can be simplified and the cost can be reduced accordingly. This is effective as the number of identifiers 4, that is, the number of installed traps increases.

When wireless communication relating to the transmission and reception of the identification data is performed between the antenna element 51 on the measuring device side and the antenna element 41 on the identifier 4 side, these antenna elements 41 and 51 are brought close to each other. For example, by setting the distance L between the two to L = 10 mm or less, the two are inductively coupled. If the above-mentioned wireless communication is performed between each of the antenna elements 41 and 51 via this inductive coupling, a communication loss between the two can be suppressed, and the power for this wireless communication can be reduced accordingly. This is because each of the above-mentioned antenna elements 41 and 51 is generated by a small amount of electric power that is not regulated by the Radio Law.
It is also very effective when wireless communication is performed between devices.

In the present embodiment, the case where the present invention is applied to a measuring device for traps has been described, but it goes without saying that the present invention can be applied to other measuring devices.

On the measuring device side, the data acquisition unit 5 is incorporated in the probe 1 in order to improve the usability, but the present invention is not limited to this. That is, the data acquisition unit 5
A device having the same function as that of the measuring device may be provided independently of the measuring device. Although the radio wave is emitted from the measuring device to the identifier 4 only when the data acquisition switch 13 on the side surface of the probe 1 is pressed, the radio wave is always emitted. Good. However, as in the present embodiment, the radio wave (identification data) is transmitted and received between the measuring device and the identifier 4 only when necessary (that is, when it is desired to capture the identification data of the identifier 4). By doing so, power saving on the measuring device side can be realized.

On the other hand, for the identifier 4, the DC power is extracted from the radio wave transmitted from the measuring device, and the extracted power is driven as its own drive power source. However, the present invention is not limited to this. Absent. That is, a power source such as a battery may be separately provided in the identifier 4 itself. In this case, when the radio wave transmitted from the measurement device side is received by the antenna element 41, the modulation unit 48 is operated in response to the reception. In addition, although the amplitude modulation is adopted as the modulation method in the modulation unit 48, other modulation methods such as frequency (FM) modulation and pulse (PCM) modulation, or ASK (Amplitude Shift Keying) or PSK are used.
(Phase Shift Keying), FSK (Frequency Shift Ke
A so-called digital modulation method such as ying) may be used.

Although the type and management number of the trap are used as the identification data, the present invention is not limited to this. That is,
If the trap to be measured can be identified, the data indicating the detailed specification and mounting location of the trap,
It may be used as the identification data.

The probe 1 and the apparatus main body 3 are connected by a cable 2, and each signal (data) including the vibration detection signal is transmitted between the probe 1 and the apparatus main body 3 by the cable 2. Although it was configured to transmit and receive, it is not limited to this. For example, the commonly known IR
Signals may be transmitted and received between the probe 1 and the apparatus body 3 by infrared communication based on DA (InfraRed Data Association) standard or the like, or wireless communication using ordinary radio waves. Further, both the wired communication and the wireless communication may be used in combination.

[0050]

As described above, according to the present invention, the predetermined information relating to the measurement object stored in the storage unit on the identifier side is transmitted to the measurement device side by wireless communication. Thus, for example, the distance between the identifier and the measuring device is some distance or the receiving portion of the measuring device (first
, The information on the identifier side can be taken into the measuring device side. Therefore, unlike the above-mentioned conventional technology using a so-called direct optical communication means called a bar code, the position at which the identifier is attached is not strictly limited, and the degree of freedom of the position at which the identifier is attached is improved.

In addition, even if the surface of the identifier is slightly scratched or dirty, if the wireless communication is not hindered, the information can be captured by the measuring device. That is, the present invention has an effect that it is less susceptible to scratches, dirt, and the like than the above-described conventional technology using a barcode. This effect is particularly effective when the place where the identifier is attached (in other words, the place where the measurement target is placed) is, for example, a factory or an outdoor where there is relatively much dust and dirt.

Then, each means for realizing the function inherent in the measuring device and each means for realizing the function of taking in the information on the identifier side, specifically, a first transmitting unit, a first transmitting element, If the first receiving element and the first receiving unit are integrated by a common housing, the usability of the entire apparatus is improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a main part according to an embodiment of the present invention.

FIG. 2 is an external view of a measuring device according to the embodiment.

FIG. 3 is an external perspective view of the identifier according to the embodiment.

FIG. 4 is a diagram showing a schematic structure of an antenna element in the embodiment.

FIG. 5 is a diagram showing an internal structure of a probe tip of the measuring device according to the embodiment.

[Explanation of symbols]

4 Identifier 5 Data Capture Unit 41 Antenna Element (Second Receiving Element, Second Transmitting Element) 45 Filter Unit 46 Rectifying Unit (Second Receiving Unit) 47 Memory Unit (Storage Unit) 48 Modulating Unit (Second Unit) (Transmission section) 51 Antenna element (first transmission element, first reception element) 54 Filter section 55 Transmission section (first transmission section) 56 Receiving section (first reception section)

Claims (14)

[Claims] A first transmitting unit that outputs a first transmission signal; and a first transmission unit that receives the first transmission signal, converts the first transmission signal into a first high-frequency signal, and emits the signal to a space. A first transmitting element, a first receiving element for receiving a second high-frequency signal from space and converting it to a first receiving signal, and a measurement target from the first receiving signal to which the first receiving signal is input. A first receiving unit that extracts predetermined information related to the object; and a storage unit in which the predetermined information related to the measurement object is stored in advance, and the measurement object itself or a vicinity thereof. And an identifier that, when receiving the first high-frequency signal from the space, converts a signal including predetermined information stored in the storage unit into the second high-frequency signal and emits the signal to the space. A measuring device capable of transmitting and receiving the first and second high-frequency signals between them. 2. The measuring device according to claim 1, wherein the first transmitting unit is configured to output the first transmission signal when a transmission command is given from outside. 3. The first transmission unit, wherein a means for realizing the original measurement function of the measurement device is provided in a housing.
The measuring device according to claim 1, wherein a part or all of the first transmitting element, the first receiving element, and the first receiving unit are incorporated. 4. The measuring apparatus according to claim 1, wherein the first transmitting element and the first receiving element are configured by a common element. 5. The measuring device according to claim 1, further comprising a setting unit for setting a part or all of the predetermined information obtained by extraction by the first receiving unit. 6. The measuring apparatus according to claim 1, wherein the first transmission signal is an AC signal having a constant frequency and a constant amplitude. 7. A second receiving element which is provided at or near the object to be measured, receives a first high-frequency signal from space, converts it into a second received signal, and outputs the second received signal. When the second receiving signal is output from the second receiving element, a second receiving unit that generates and outputs a response command in response to the second receiving signal, and predetermined information related to the measurement target are stored in advance. A second transmission unit that has a storage unit and outputs a second transmission signal including predetermined information stored in the storage unit when the response command is output from the second reception unit; And a second transmission element to which the second transmission signal is supplied and converts the second transmission signal into a second high-frequency signal and emits the same to space. Receiving the second high-frequency signal from the space and receiving the received signal. From the available transmit and receive the first and second respective frequency signals between the measuring device, having a function for extracting the predetermined information identifier. 8. The identifier according to claim 7, wherein the second transmitting element and the second receiving element are configured by a common element. 9. The second receiving section is an electric circuit composed of only passive elements, extracts power from the second received signal, and outputs the extracted power as the response command. The identifier according to claim 7, wherein the second transmitter is configured to drive the power output from the second receiver as its own drive power. 10. The second receiving element, a second receiving unit,
The identifier according to claim 7, wherein a part or all of the second transmitting unit and the second transmitting element are integrated. 11. A measuring system comprising a combination of the measuring device according to claim 1, 2, 3, 4, 5 or 6, and the identifier according to claim 7, 8, 9 or 10. 12. When transmitting and receiving the first high-frequency signal between the first transmitting element and the second receiving element,
12. The device according to claim 11, wherein each of the elements is brought close to each other to inductively couple the two, and the first high-frequency signal is transmitted and received through the inductive coupling.
The measurement system according to 1. 13. When transmitting and receiving the second high-frequency signal between the second transmitting element and the first receiving element,
12. The device according to claim 11, wherein said two elements are inductively coupled to each other by bringing said elements close to each other, and said second high-frequency signal is transmitted and received through said inductive coupling.
The measurement system according to 1. 14. The measuring device according to claim 1, 2, 3, 4, 5, or 6, wherein the object to be measured is a trap device provided in a piping system. An identifier according to claim 1, or claim 11, 12, or 1.
4. The measurement system according to 3.